def test4():
matrix = part1.createMatrix(4, 4)
part1.executeInstruction(matrix, [1,0,0,0,3])
part1.executeInstruction(matrix, [-1,0,0,3,0])
print('first column is turned on except origin: ' + str(isLit(matrix, 0,0,0,3) == 3))
print('first row is turned on except origin: ' + str(isLit(matrix, 0,0,3,0) == 3))
print(str(len(matrix)))
def test3():
matrix = part1.createMatrix(4,4)
part1.executeInstruction(matrix, [1,0,0,0,3])
print('first column was turned on: ' + str(isLit(matrix, 0,0,0,3) == 4))
print('second column is still off: ' + str(isLit(matrix, 1,0,1,3) == 0))
